This video is about diving in the Oosterschelde estuary in the Netherlands. Animals seen include a normally coloured black squat lobster.
Dutch marine biologists of Stichting ANEMOON report on Sunday 23 November 2014:
Recreational divers have found in 2013 and 2014 two bright blue coloured black squat lobsters in the Oosterschelde. The normal colour of these crustaceans is orange to dark red. Only one in two million animals have this rare blue colour deviation. The fact that two have been detected in our coastal waters shows that the population of squat lobsters is locally very high.
See also here.
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